If you already have faulty flashing installed you must remove it.
How to install l flashing on a roof.
Once the cut is made you will set the flashing on the corner and nail it in place.
Prepare the area where you will install the roof flashing.
Continuous flashing against a sidewall is one way to install a roof but it s not the correct way.
If you do not wish to form your own corner flashing you can buy pre bent pieces and cut them to size or use a piece of corrugated aluminum which is easier to bend.
Roof shingle over step flashing.
If siding on.
It may seem as if a single piece of flashing would offer more protection than many pieces of step flashing.
The metal flashing must overlap the material not the other way around.
Begin by removing the shingles at the affected area and removing old flashing if present.
Once even a small section of roofing cement fails you ll have a leak.
To cover the corner you will need to cut a custom piece of flashing.
But it doesn t work that way.
If you are using a pre formed flashing you are going to make a cut at 45 degrees in toward the midline.
Then nail the new l shaped flashing under the builder s felt but above the fascia board.
Measure the length of the porch roof joint to determine how much flashing you will need.
Cut some membrane material to seal between the vent flashing and the roof and cut an opening for the vent.
Step flashing on roof peak.
The first piece of step flashing should overlay the last row of shingles.
Next place your vent flashing on top of the membrane.
How to install porch roof flashing.
